Band structure of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Bi</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">Sr</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">CaCu</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>8</mn></mrow></msub></mrow></math> studied by angle-resolved photoemission

T. Takahashi; H. Matsuyama; H. Katayama-Yoshida; Y. Okabe; S. Hosoya; K. Seki; H. Fujimoto; M. Sato; H. Inokuchi

doi:10.1103/PhysRevB.39.6636

Band structure of ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8}$ studied by angle-resolved photoemission

T. Takahashi, H. Matsuyama, H. Katayama-Yoshida, Y. Okabe, S. Hosoya, K. Seki, H. Fujimoto, M. Sato, and H. Inokuchi

Phys. Rev. B 39, 6636 – Published 1 April 1989

Abstract

Angle-resolved photoemission measurement with synchrotron radiation has been performed on single-crystal ${Bi}_{2}$ ${Sr}_{2}$ ${CaCu}_{2}$ $O_{8}$ . Two dispersive bands intersecting the Fermi level midway between the Γ point and the Brillouin-zone boundary were observed. The other bands with higher binding energy are almost dispersionless in contrast with the band-structure calculation. The present experimental result indicates the existence of a Fermi surface and Fermi-liquid states in the high- $T_{c}$ superconductor as well as band renormalization due to the strong electron correlation.